JP5066323B2 - Substrates with thermal management coatings for insulating glass units - Google Patents

Description

(Cross-reference of related applications)
This application claims the benefit of US Provisional Application Serial No. 60 / 377,783, filed May 3, 2002, the entire contents of which are incorporated herein.

(Field of Invention)
The present invention relates generally to solar control coating, and in particular on a surface separate from the inner surface (# 2 surface) of the outer sheet of a multi-sheet-glazed insulating unit. It relates to a coating having solar radiation control and spectral properties that can be adapted for use in the field.

(Description of currently available technology)
Multi-glazed thermal insulating glass units ("IG units") having two or more glass sheets juxtaposed with a gap are characterized by cool to cold climates, such as seasons that require prolonged furnace operation It is becoming the industry standard for residential and commercial buildings in climatic areas. The IG unit has improved thermal insulation performance over windows with a single glass sheet due to reduced conductive and convective heat transfer compared to normal windows. However, until very recently, the use of IG units has not been widespread in areas with warm or hot climates, such as those characterized by seasons that require long-term air-conditioning operation, because in such areas the use of windows This is because the first function required is to reduce solar heat load, not the insulation value.

  In the past decades, solar control coated glass has been introduced to the market. Such solar control coated glass often absorbs a large amount of incident energy and / or reflects a large amount of visible light so that the amount of solar energy directly transmitted through the coated glass (in the visible region of the electromagnetic spectrum and / or A significant level of solar heat relief is achieved by reducing (in the near infrared region). More recently, it has been observed that certain high performance silver-based low emissivity (low E) coatings have a significant degree of solar control in addition to their excellent thermal insulation properties. It was. Such silver-based solar control / low E-coated glass is not only in the regions characterized by long heating seasons (due to their low E / insulation performance), but also in the deep south, southeast and south of the United States due to its solar control benefits. Even in regions such as the western region, which are characterized by long cooling seasons, they are now becoming increasingly popular.

  Today, the glazing industry desires to have a window system with additional functions beyond the benefits of thermal insulation and / or solar control (hereinafter referred to as “thermal management functionalities”). Examples of other such desired functions include aesthetic elements, safety, and ease of cleaning. For example, architects will want to offer a wide range of colors to the IG unit to improve the aesthetic appearance of the building. To achieve this goal, a colored glass or tinted glass sheet can be used as the outer sheet of the IG unit. In order to impart solar control properties, a solar control coating can be deposited on the inner surface (# 2 surface of the IG unit) of the colored glass sheet that is the outer sheet. One example of a suitable solar control coating is sold under the name Solarban® 60 by PPG Industries, Inc. The Solarvan® 60 coating includes two layers of silver infrared reflective film and is discussed in US Pat. No. 5,821,001.

  While this standard practice of forming a solar control coating on the inner surface (# 2 surface) of a colored glass sheet provides an acceptable IG unit, the coating of colored glass sheets has several drawbacks. For example, colored glass is generally not manufactured as often as clear glass, so if an architect wants a special color for the outer pane of an IG unit in a short period of time, the coating will Therefore, it will not be available immediately. Furthermore, if the colored glass is stored in large quantities in anticipation of the coating, the colored glass may develop surface degradation or corrosion during storage. Such corrosion may not become apparent until the colored glass is coated, and the coating may appear mottled, smudged, or otherwise unacceptable.

  One approach to addressing the above drawbacks is to apply a solar control coating to the inner pane of the double glazed IG unit and to use an uncoated colored glass sheet for the outer pane. US Pat. No. 5,059,458 discloses a double glazed IG unit having a colored glass sheet on the outside and a clear glass sheet on the inside and a silver layer on the outer surface of the clear glass sheet. Has been. However, this approach also has some drawbacks. For example, using a conventional solar control coating on the # 3 surface of the IG unit (the outer surface of the inner glass sheet of the two pane glass IG unit) would have the coating on the # 2 surface of the IG unit (all other This gives the overall IG unit a different solar control performance than the ones that remain the same. In particular, bringing the solar control coating on the # 3 surface rather than the # 2 surface results in a relative increase in shading coefficient and a relative increase in solar heat gain coefficient.

  For example, in a reference IG unit (to be defined later), a conventional Solarvan® 60 coating on the # 2 surface has a luminous transmittance of 60%, from 9% to 10% luminous exterior reflectance, 0.35-0.36 shielding factor (ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) summer conditions) ), And a solar heat gain rate of 0.30 to 0.31 (under ASHRAE summer conditions). When the solar van (registered trademark) 60 coating is switched to the # 3 surface, the IG unit performance is 60% luminous transmittance, 11% luminous external reflectance, 0.41 shielding coefficient (ASHRAE summer conditions), And the solar heat gain rate (ASHRAE summer conditions) of 0.36.

  The performance of Solarvan® 60 coating has been well accepted in the IG unit field. Therefore, to address at least some of the issues discussed above, solar control characteristics similar to solar control characteristics and / or aesthetic characteristics of the Solarvan® 60 coating on the # 2 surface of the IG unit and It would be beneficial to provide a coating, such as a solar control coating, that is available on the inner pane surface of the IG unit (eg, the # 3 surface of a two-pane IG unit) that provides aesthetic properties.

(Summary of Invention)
One aspect of the present invention is a coating on clear glass, the glass is fitted into the inner position of the double-glazed IG unit with the coating on the # 3 surface, and is not coated in the IG unit When combined with a colored or clear outer glazing (pane), the IG unit is assembled using a conventional solar control coating on the clear glass sheet or # 2 surface of the colored glass sheet A coating on such clear glass with similar, if not identical, aesthetic and thermal management performance. As can be appreciated, the present invention is not limited thereto. More specifically, and without limiting the present invention, the coated clear glass substrate of the present invention as the outer glazing of the IG unit (ie, the thermal management coating of the present invention in # 2 surface orientation). It is possible to use if the aesthetic elements and thermal management performance obtained from such an IG unit configuration is acceptable for a specific application.

  A coated article for use in an IG unit includes a substrate and a coating formed on at least a portion of the substrate. The coating includes a first separation layer including at least one dielectric layer; a first infrared reflective layer deposited on the first separate layer; on the first infrared reflective layer A second separating layer comprising at least one dielectric layer deposited; a second infrared reflecting layer deposited on the second separating layer; at least one dielectric deposited on the second infrared reflecting layer A third separating layer comprising a layer; and a third infrared reflecting layer deposited on the third separating layer. This coating can be located on the # 2 surface or # 3 surface of the IG unit after being installed.

  Another coated article for use in an IG unit includes a substrate and a coating formed on at least a portion of the substrate. The coating includes a first separating layer including at least one dielectric layer; a first infrared reflecting layer formed on the first separating layer; at least one dielectric formed on the first infrared reflecting layer. A second separation layer including a body layer; and a second infrared reflective layer formed on the second separation layer. This coating can be located on the # 2 surface or # 3 surface of the IG unit after being installed. This coating can provide a reference solar heat gain coefficient of 0.35 or less.

  The IG unit is formed on a first pane defining a # 1 surface and a # 2 surface, at least one second pane defining a # 3 surface and a # 4 surface, and at least a portion of the # 2 surface or the # 3 surface A coated coating. The coating includes a first separating layer including at least one dielectric layer; a first infrared reflecting layer deposited on the first separating layer; at least one dielectric deposited on the first infrared reflecting layer. A second separation layer comprising a body layer; a second infrared reflection layer deposited on the second separation layer; a third separation layer comprising at least one dielectric layer deposited on the second infrared reflection layer And a third infrared reflective layer deposited on the third separating layer.

  Another IG unit includes a first pane defining a # 1 surface and a # 2 surface, at least one second pane defining a # 3 surface and a # 4 surface, and at least a portion of the # 2 surface or # 3 surface. A first separation layer comprising at least one dielectric layer; a first infrared reflective layer deposited on the first separation layer; on the first infrared reflective layer A second separation layer comprising at least one dielectric layer deposited on the first separation layer; and a second infrared reflective layer deposited on the second separation layer. This coating can provide a reference solar heat gain of 0.35 or less.

  FIG. 1 is a cross-sectional side view (not proportional) of a coated article incorporating features of the present invention.

  FIG. 2 is a side sectional view (not proportional) of an IG unit incorporating features of the present invention.

(Preferred embodiment)
As used herein, space or direction terms, such as “left”, “right”, “inside”, “outside”, “top”, “bottom”, “top”, “bottom”, etc. Relates to the present invention as shown in FIG. However, it should be understood that the present invention can assume various alternative orientations, and thus such terms should not be construed as limiting. Further, as used herein, all numerical values used in the specification and claims to represent dimensions, physical characteristics, processing parameters, component amounts, reaction conditions, etc. are terms in all cases. It should be understood as being changed by “about”. Accordingly, unless indicated otherwise, the numerical values set forth in the following description of the specification and claims may vary depending on the intended properties expected to be obtained by the present invention. In any case, we do not intend to limit the application of the doctrine of equivalence to the claims, and each number is interpreted at least in light of the number of significant Arabic numerals reported and by applying the usual rounding method. It should be. Moreover, all ranges disclosed herein are to be understood to include the values in the beginning and ending ranges and any and all subranges subsumed therein. For example, a defined range of “1-10” is any and all subranges between a minimum value of 1 and a maximum value of 10, ie all subordinates starting with a minimum value of 1 or more and ending with a maximum value of 10 or less. Ranges such as 5.5-10 should be considered to be included. The terms “formed on”, “attached on”, or “provided on” were formed, attached or provided on a surface, but not necessarily in contact with the surface. Means. For example, a coating layer “formed on” a substrate excludes the presence of one or more other coating layers or films of the same or different composition placed between the formed coating layer and the substrate. do not do. It should be understood that all documents cited in this specification are incorporated herein in their entirety. Unless otherwise indicated, the “luminous” or “visible” region is in the wavelength range of 380 nanometers (nm) to 780 nm, and the “infrared” (IR) region is 780 nm to 100, It is in the wavelength range of 000 nm, and the “ultraviolet” (UV) region is in the wavelength range of 300 nm to 380 nm. The term “optical thickness” refers to the index of refraction (dimensionless) of the material, inquired with respect to about 550 nanometers (nm) in the visible region of the electromagnetic spectrum, and the physical thickness of the material. ) (In angstroms (Å)). As used herein, the term “sunlight control coating” refers to the solar properties of a coated article, such as, but not limited to, being reflected and / or absorbed by a shielding factor and / or emissivity and / or a coated article. And / or a coating that affects the amount of solar radiation transmitted therethrough, for example, the absorption or reflection of infrared or ultraviolet radiation. The solar control coating can block, absorb or filter selected regions of the solar spectrum, such as, but not limited to, the visible spectrum.

  Next, a good example coating will be described, and then the use of the coating in a double pane IG unit will be described. However, it should be understood that the present invention is not limited to use with a dual pane IG unit and can be implemented, for example, with a single pane window or with multiple pane IG units of three or more panes. .

  Referring to FIG. 1, an exemplary coated article 10 incorporating features of the present invention is shown. The coated article 10 includes a substrate 12 having a coating 14.

  In the broad practice of the present invention, the substrate 12 can be of any desired material having any desired property, such as opaque, translucent, or transparent to visible light. What is meant by “transparent” is that the visible light transmission through the substrate is greater than 0% and has a visible light transmission of up to 100%. Alternatively, the substrate can be translucent or opaque. By “translucent” is meant an object that allows electromagnetic energy (eg, visible light) to pass through the substrate but diffuses this energy on the surface of the substrate opposite the viewer. Is not clearly visible. By “opaque” is meant having a visible light transmission of 0%. Examples of suitable substrates include, but are not limited to: plastic substrates (eg, acrylic polymers such as polyacrylates; polyalkyl methacrylates such as polymethyl methacrylate, polyethyl methacrylate, poly Propyl methacrylate, etc .; polyurethane; polycarbonate; polyalkyl terephthalate, such as polyethylene terephthalate (PET), polypropylene terephthalate, polybutylene terephthalate, etc .; polysiloxane-containing polymer; or a copolymer of any monomer for making them, or Mixtures of any of these); metal substrates such as, but not limited to, galvanized steel, stainless steel, and aluminum; ceramic substrates; ties A substrate; glass substrates; or mixtures or combinations thereof. For example, the substrate can be normal, uncolored soda-lime-silica glass, ie “clear glass”, or colored glass or otherwise colored glass, borosilicate glass, leaded glass (leaded) glass, tempered glass, non-tempered glass, annealed glass, or heat strengthened glass. The glass can be of any type such as ordinary float glass, flat glass, or float glass ribbon, and any optical property, eg any value of visible light transmittance, ultraviolet transmittance, infrared transmission And / or any composition having total solar energy transmission. The types of glass suitable for the practice of the present invention are not intended to be limiting, but include U.S. Pat. Nos. 4,746,347, 4,792,536, 5,240,886, 5,385, 872, and 5,393,593. In addition, the substrate can be a clear plastic and / or polymer substrate, and the coating of the present invention is deposited on the surface of the substrate. In addition, the coating stack of the present invention can be applied to a polymer or plastic “web” or thin sheet that can be suspended inside a UG unit as known in the art. it can. In the latter case, the coated web will provide the main part of the thermal management benefit, and this thermal management coating is separate from the glass or plastic substrate that constitutes the main boundary surface of the IG unit. It will be on the substrate.

  An exemplary coating 14 can be a multilayer coating stack. The term “coating stack” or “coating” can include one or more layers, and “layers” can include one or more films. With respect to FIG. 1, the exemplary coating 14 illustrated therein includes three infrared reflective layers 16, 18 and 20. For ease of discussion, layer 16 is referred to as the first infrared reflective layer, layer 18 is referred to as the second infrared reflective layer, and layer 20 is referred to as the third (optional) infrared reflective layer. The illustrated coating 14 further includes separating layers 22, 24, 26 and 28. The separation layer 22 or first separation layer is between the substrate 12 and the first infrared reflection layer 16; the separation layer 24 or second separation layer is between the first infrared reflection layer 16 and the second infrared reflection layer 18. The separation layer 26 or third separation layer is between the second infrared reflection layer 18 and the third infrared reflection layer 20, and the fourth separation layer or outermost separation layer 28 is the third infrared reflection layer. 20 and between the environment. As will be appreciated by those skilled in the art, the present invention also contemplates more than three infrared reflective layers and more than four separating layers. Furthermore, as will be mentioned later, the present invention also contemplates less than three infrared reflective layers and less than four separating layers.

  The coating 14 of the present invention can be applied in any conventional manner, such as, but not limited to, spray pyrolysis, chemical vapor deposition (CVD), sol-gel, electron beam evaporation ( It can be deposited on the substrate 12 by electron beam evaporation, or magnetron sputter vapor deposition (MSVD). In one aspect, the coating 14 is deposited by MSVD.

  The first spacing layer 22 can include one or more dielectric (eg, anti-reflective) layers or films and optionally one or more non-dielectric layers or films. As used herein, the term “non-dielectric layer or film” is a material having charge mobile carriers, such as metals, semiconductors, metalloids, alloys, mixtures or combinations thereof. The dielectric layer or film may be of any type known in the art, such as, but not limited to, oxides, nitrides, and / or oxynitrides, such as, but not limited to Although not, zinc oxide, zinc stannate, silicon nitride, silicon aluminum nitride, ceramics, titanium dioxide, and / or types disclosed in US Pat. Nos. 5,821,001 and 5,942,338 Stuff. Dielectric films can function for the following: (1) Nucleation for subsequently deposited and overlying layers and / or films, eg, infrared reflective layers that are subsequently deposited Provides a nucleation layer and / or (2) allows some control over the aesthetic elements and thermal management performance of the coating. The dielectric film can include different dielectric materials each having a similar refractive index or different materials having different refractive indices. The relative proportions of the dielectric films of the separating layer can be varied to optimize the thermal management performance, aesthetic factors and / or durability of the coated article. In addition, any or all of the dielectric film of the separating layer can exhibit optical absorption in any region of the electromagnetic spectrum.

  The non-dielectric layer or film of the first separation layer (or subsequent separation layer) is of any type known in the art, such as, but not limited to, titanium, copper, stainless steel. And (1) to protect the underlying film from damage and / or deterioration during heat treatment of the coated glass for products designed and / or intended to undergo high temperature processing after coating and / or Or (2) to improve the mechanical and / or chemical durability of the optical stack of thin films of the coated article and / or (3) to provide some control over the aesthetic elements and / or thermal management performance of the coated article, for example. It can act by serving and allowing it to absorb. Any or all of the non-dielectric film can exhibit optical absorption in any region of the electromagnetic spectrum. The present invention also contemplates the use of a non-dielectric film with a separating layer above, below and / or between the dielectric film (s). For example, but not limiting the present invention, a non-dielectric film that can be used for optical absorption was deposited on the substrate, between the dielectric films, or at the end of the first separating layer. It can be deposited on the dielectric film.

  The first separation layer 22 may be a substantially single phase layer or film, for example, a metal alloy oxide layer, for example, zinc stannate, or a mixture of phases composed of tin and zinc oxides. Possible or composed of multiple layers or films, for example metal oxide films such as those disclosed in US Pat. Nos. 5,821,001, 4,898,789 and 4,898,790 Can be done. In one embodiment, the first separation layer 22 includes a first metal oxide or alloy oxide layer or film (first dielectric layer) deposited on at least a portion of the major surface of the substrate 12 and the first dielectric layer. A multilayer structure having a second metal oxide layer or film (second dielectric layer) deposited on at least a portion of the metal alloy oxide film. In one embodiment, the first metal alloy oxide layer can be a zinc and tin oxide mixture or an alloy oxide. For example, the zinc / tin alloy can include zinc and tin in a proportion of 10 wt% to 90 wt% zinc and 90 wt% to 10 wt% tin. One suitable metal alloy oxide for use in the present invention is zinc stannate. The second metal oxide layer can include a zinc-containing layer, such as zinc oxide. In one aspect, the first metal alloy oxide layer can include an oxide of zinc and tin, such as zinc stannate, and can be from 100 angstroms (Å) to 500 Å, such as from 150 Å to 400 Å, such as, for example, It can have a thickness in the range of 200 to 350 inches, for example 250 to 350 inches. The second metal oxide layer can include zinc oxide and can have a thickness in the range of 50 to 200 inches, such as 75 to 150 inches, such as 100 to 150 inches, such as 130 to 160 inches. .

  In one aspect, the present invention is not limited, but the overall physical thickness of the dielectric film (s) of the first separation layer 22 is in the range of 50 to 700 mm, for example, 100 to 600 mm. It can be within a range, for example within a range of 200 to 575 inches, for example within a range of 293 to 494 inches. The overall physical thickness of the non-dielectric film (s) is in the range of 0 Å to 500 Å, such as 0 Å to 400 Å, such as 0 Å to 300 Å, such as 0 Å to 50 Å, such as 0 Å to 30 た と え ば. be able to. The first separation layer 22 has an overall physical thickness in the range of 50 mm to 1200 mm, for example, in the range of 100 mm to 1000 mm, for example, in the range of 200 mm to 875 mm, for example, in the range of 250 mm to 500 mm. Can do.

  A first infrared (IR) reflective layer 16 can be deposited on the first separating layer 22 and can be infrared (solar-infrared and / or thermal infrared) of the electromagnetic spectrum. -infrared)) portion can have high reflectivity, for example, but not more than 50% reflectivity. The first infrared reflective layer 16 includes one or more films of infrared reflective material, such as, but not limited to, gold, copper, silver, or mixtures, alloys or combinations thereof. Can do. In one embodiment of the present invention, the first infrared reflective layer 16 contains silver. These films can exhibit some reflectivity in the visible portion of the electromagnetic spectrum. The first IR reflective layer 16 (and other IR reflective layers) can: (1) help control solar heat gain through the window and / or glare from transmitted visible light Infrared and / or visible light rejection to control; (2) Infrared reflective layer has significant reflectivity in the thermal infrared portion of the electromagnetic spectrum, eg, but not limited to greater than 50% A slightly lower radiation characteristic to the coated article exhibiting radiant heat transfer through and / or through the IG unit when exhibiting reflectivity, for example, but not limited to less than 0.25 And / or (3) allow some control over the aesthetic elements of the coated article.

  In one embodiment, the present invention is not limited, but the thickness of the first infrared reflective layer is 5 to 200 mm, such as 10 to 200 mm, such as 50 to 200 mm, such as 75 to 175 mm, such as 75 mm. It can be in the range of ~ 150 cm, for example 93 to 109 cm. In one specific embodiment, the first infrared reflective layer comprises silver and has a thickness in the range of 100 to 150 inches, such as 110 to 140 inches, such as 120 to 130 inches.

  Further, in the practice of the present invention, when an additional infrared reflection layer, for example, the second infrared reflection layer 18 is provided, the second separation layer 24 can be provided. Otherwise, the outermost separating layer 28, which will be described in detail later, is applied on the first infrared reflective layer 16.

  A second spacing layer 24 can be deposited over the first infrared reflective layer 16 and one or more dielectric layers or films and / or one or more non-dielectric layers or films. Can be included. As can be appreciated, the dielectric layer or film and the non-dielectric layer or film of the second separation layer may be the same as the material and number of the dielectric film and / or non-dielectric film of the first separation layer 22. Or they may be different. In one practice, a non-dielectric film (“second non-dielectric film (s) of the second separation layer”) can be deposited on the first IR reflective film 16. The first non-dielectric film can be a metal, such as, but not limited to, titanium, and is often referred to in the art as a “primer film” or “barrier film”. The second non-dielectric layer first non-dielectric film (s) can: (1) (A) during the deposition of the overlying dielectric film, eg the second divergent layer 24; And / or (B) protect the underlying infrared reflective layer from degradation during heat treatment of the coated article for products designed / intended to undergo high temperature processing after coating; and / or (2) of the coated article Contributes to and enables some control of aesthetic elements and / or thermal management performance. The first non-dielectric film (s) of the second separation layer 24 can exhibit optical absorption in some region of the electromagnetic spectrum, if desired. The types of non-dielectric films that can be used in the practice of the present invention include, but are not limited to, those disclosed in PCT / US00 / 15576.

  One or more dielectric layers or films are present on the first non-dielectric film (s) of the second spacing layer 24, if present, otherwise the first infrared reflective layer. 16 can be attached. The dielectric film (s) of the second separation layer 24 may be one, two or more films having similar refractive indices in the same manner as described for the dielectric film of the first separation layer 22. Can be included. In addition, any or all of the dielectric film of the second separation layer 24 can exhibit optical absorption in any region of the electromagnetic spectrum. It is also conceivable that the dielectric film (s) of the second separating layer 24 provide some protection to the underlying layers and / or films from mechanical damage and / or chemical / environmental attack, collapse or corrosion. .

  In some cases, the second separation layer 24 may comprise other non-dielectric layer or film (s) ("other non-dielectric film (s) of the second separation layer"), the second separation layer 24. The dielectric film (s) can be included above, below, or between. The other non-dielectric film (s) of the second separation layer 24 can be the same and / or different material and number as the non-dielectric film (s) of the first separation layer 22. The relative proportions of the component films of the second release layer 24 can be varied to optimize the thermal management performance, aesthetic factors, and / or chemical / mechanical durability of the coated article.

  In one practice of the present invention, the present invention is not limited, but the first non-dielectric film (s) of the second separation layer is 0 to 100 mm, such as 5 mm to 75 mm, such as 5 mm to 50 mm. For example, it can have a thickness in the range of 5 to 30 inches, for example, 15 to 25 inches. In one specific embodiment, the first non-dielectric film can have a thickness in the range of 5 to 15 inches, such as 10 to 25 inches. If present, the other non-dielectric film (s) of the second separation layer 24 may have a thickness in the range of 0 to 500 mm, such as 0 to 400 mm, for example 0 to 300 mm. it can.

  The dielectric layer or film (s) of the second separation layer 24 is in the range of 600 Å to 1000 、, such as in the range of 700 to 900 、, such as in the range of 725 Å to 875 、, such as 739 Å to 852 Å. be able to. For example, the second separation layer 24 can have a thickness in the range of 600 to 1500 inches, for example, in the range of 705 to 1375 inches, for example, in the range of 730 to 1250 inches, such as 730 to 1230 inches. In one embodiment, the second separation layer 24 has one or more metal oxide or metal alloy oxide layers or films, such as those described above with respect to the first separation layer 22. It can be a multilayer structure. In one embodiment, the second spacing layer 24 comprises a first metal oxide layer or film, such as a zinc oxide layer, deposited on a first primer film (first non-dielectric layer). A second metal alloy oxide layer or film, such as a zinc stannate layer, can be deposited on the first zinc oxide layer. A third metal oxide layer, such as another zinc oxide layer, may be deposited over the zinc stannate layer to form a multi-film second separation layer 24. In one specific embodiment, the first and third metal oxide layers of the second separation layer 24 are in the range of 50 to 200 mm, such as 75 to 150 mm, such as 100 to 120 mm, such as 110 to 120 mm. Can have a thickness of The second metal alloy oxide layer may have a thickness in the range of 100 to 500, such as 200 to 500, such as 300 to 500, such as 400 to 500, such as 450 to 500.

  A second infrared reflective (IR) layer 18 can be deposited over the second spacing layer 24 and one or more of the types of infrared reflective materials of the types referred to above with respect to the first infrared reflective layer 16. The above films can be included. As can be appreciated, the material of the second infrared reflective layer may be the same as or different from the material of the first infrared reflective layer.

  In one practice of the present invention, the present invention is not limited, but the thickness of the second infrared reflecting layer is 50 to 250 mm, such as 75 mm to 225 mm, such as 75 mm to 200 mm, such as 120 mm to 150 mm, For example, it can be in the range of 130 Å to 150 Å, such as 114 Å to 197 Å.

  In one practice of the present invention, if an additional infrared reflective layer, such as the third infrared reflective layer 20, is to be applied in the coating 14, a third spacing layer 26 is applied; In some cases, an outermost separation layer 28, which will be described in detail later, can be applied on the second infrared reflective layer 18.

  A third spacing layer 26 can be deposited over the second infrared reflective layer 18 and can include one or more dielectric layers or films and / or one or more non-dielectric layers or films. For example, those described above. As can be appreciated, the dielectric and non-dielectric films of the third separation layer 26 are the same as the material and number of the dielectric and / or non-dielectric films of the first and / or second separation layers 22, 24. It may be present or different. In one practice of the present invention, the present invention is not limited, however, the first non-dielectric film (s) of the third separation layer 26 is 0 to 100 mm, such as 5 mm to 75 mm, such as 5 mm to 5 mm. It can have a thickness in the range of 50 た と え ば, for example 5 Å to 30 Å, for example 15 Å to 25 Å. In one specific embodiment, the first non-dielectric film can have a thickness in the range of 5 to 15 inches, such as 10 to 25 inches. If present, the other non-dielectric film (s) of the third separation layer 26 may have a thickness in the range of 0 to 500 mm, for example 0 to 400 mm, for example 0 to 300 mm. it can.

  One or more dielectric layers or films may be present on the first non-dielectric film (s) of the third separating layer 26 if present, otherwise on the second infrared reflection. A layer 18 can be deposited. The relative proportions of the component films of the third separating layer may be varied to optimize the thermal management performance, aesthetic factors, and / or chemical / mechanical durability of the coated article.

  In one aspect, the dielectric film (s) of the third separating layer 26 can be in the range of 600 to 1000 mm, such as 625 to 900 mm, such as 650 to 875 mm, such as 729 to 764 mm. . The third separation layer 26 may have a thickness in the range of 600 to 1600, such as 630 to 1375, such as 755 to 1250, such as 730 to 1230. In one embodiment, the third separation layer 26 can be a multilayer structure similar to the second separation layer. For example, the third separation layer 26 includes a first metal oxide layer such as a zinc oxide layer, a second metal alloy oxide layer such as a zinc stannate layer, and a third metal oxide layer such as another zinc oxide layer. Can be included. In one non-limiting embodiment, the first and third metal oxide layers have a thickness in the range of 50 Å to 200 Å, such as 75 Å to 150 Å, such as 100 Å to 120 、, such as 100 Å. Can have. The metal alloy oxide layer may have a thickness in the range of 100 to 1000, for example 200 to 800, for example 300 to 600, for example 500.

  A third infrared reflective (IR) layer 20 can be deposited over the third spacing layer 26 and is mentioned in the discussion regarding the first and / or second infrared reflective layers 16, 18 respectively. One or more films of different types of infrared reflective materials can be included. As can be appreciated, the material (s) of the third infrared reflective layer 20 may be the same as the material (s) of the first and / or second infrared reflective layers 16, 18 or May be different.

  In one practice of the present invention, the present invention is not limited, but the thickness of the third infrared reflective layer 20 is 50 to 250 mm, such as 75 mm to 225 mm, such as 75 mm to 200 mm, such as 140 mm to 180 mm, For example, it can be in the range of 150 Å to 170 Å, such as 160 Å to 170 Å, such as 138 Å to 181 Å.

  Further, in the practice of the present invention, an additional infrared reflective layer, such as a fourth infrared reflective layer (not shown), similar to the first, second and / or third infrared reflective layers 16, 18, 20 respectively. Is not to be applied in the coating 14, an additional separation layer (not shown) similar to the second and / or third separation layer 24 and 26, respectively, is to be applied. Can do. If this is not the case, an outermost separating layer 28, which will be described in detail later, can be applied on the third infrared reflective layer 16.

  An outermost separation layer 28 can be deposited over the third infrared reflective layer 20 and can include one or more dielectric layers or films and / or one or more non-dielectric layers or films. Can be included. As can be appreciated, the dielectric film and non-dielectric film of the outermost separation layer is the material of the dielectric film and / or non-dielectric film of the first, second and / or third separation layers 22, 24 and 26, respectively. And the number may be the same or different. In one practice, the first primer film or first non-dielectric film (s) of the outermost separation layer is deposited on the underlying infrared reflective layer, such as the third infrared reflective layer 20. Can do. In one specific embodiment, the thickness of the first non-dielectric film (s) of the outermost separation layer is 0 to 100 mm, such as 5 mm to 75 mm, such as 5 mm to 50 mm, such as 5 mm to 30 mm, For example, it can be in the range of 5 to 15 inches, such as 10 to 20 inches, such as 15 to 25 inches. If present, the other non-dielectric film (s) of outermost separation layer 28 may have a thickness in the range of 0 to 500 mm, such as 0 to 400 mm, such as 0 to 300 mm. it can.

  The one or more dielectric layers or films and the one or more protective films are on top of the first non-dielectric film (s) of the outermost separation layer 28, if present. Otherwise, it can be deposited on the third infrared reflective layer 20. The relative proportions of the component films of the outermost separating layer 28 can be varied to optimize the thermal management performance, aesthetic factors, and / or chemical / mechanical durability of the coated article. In one practice, the outermost separation layer 28 can have a thickness in the range of 170 to 600 inches, such as in the range of 205 to 500 inches, such as in the range of 235 to 430 inches. Any temporary overcoat (discussed below) thickness is not included, because it is removed before the product is used.

  The outermost dielectric layer dielectric film (s) can be in the range of 100 to 400 mm, such as in the range of 150 to 350 mm, such as in the range of 175 to 325 mm, for example, 206 to 310 mm. . The outermost separation layer 28, excluding the protective film (s), is in the range of 100 to 1000 mm, for example in the range of 155 to 725 mm, for example in the range of 180 mm to 675 mm, for example 185 mm to Can have a thickness of 705mm. In one embodiment, the outermost separation layer 28 is composed of a layer or film containing one or more metal oxides or metal alloy oxides such as those discussed above with respect to the first, second or separation layers. Can. In one embodiment, the outermost separation layer 28 is deposited on a first metal oxide layer or film, such as a zinc oxide layer or film, deposited on the third primer film. A multiple film layer having a second metal alloy oxide layer or film formed, such as a zinc stannate layer or film. The metal oxide layer or film can have a thickness in the range of 25 to 200 inches, such as 50 to 150 inches, for example, 100 inches. The metal alloy oxide film can have a thickness in the range of 25 to 500 inches, such as 50 to 250 inches, such as 100 to 210 inches.

  A permanent protective overcoat can be applied over the outermost separating layer 28 to protect it from mechanical and chemical attacks. In one aspect, the protective overcoat is a metal oxide such as titanium dioxide or zirconium oxide having a thickness in the range of about 10 to 100 mm, such as 20 to 60 mm, such as 30 to 40 mm, such as 30 to 46 mm. Can be.

  It is optional to include a protective film as a component of the outermost separating layer 28. The protective film (s) can protect the underlying layer from mechanical damage and / or chemical attack due to exposure to the environment during storage, shipping and processing of the coated article. The protective film (s) can also contribute to the aesthetic elements and / or thermal management performance of the coated article. The protective film (s) can be one, two or more films having a similar refractive index. Further, any or all of the protective films can exhibit optical absorption in any region of the electromagnetic spectrum, if desired. The protective film can be of a durable type, which provides mechanical and chemical protection and stays on the outermost surface of the coating. These types of protective films are described in US Pat. No. 4,786,563. The protective film can also be of a less durable type, such as zinc oxide.

  Furthermore, over the permanent protective overcoat, a temporary protective film, such as commercially available from PPG Industries and identified by the trademark “TPO” and US patent application 60 / 142,090 and 09 / 567,934 can be attached. Temporary protective film functions as an underlying layer for packaging, shipping, and downstream processing (eg, unpacking, unloading, cutting, seaming) coated articles Further protection from mechanical damage during / edging, edge deletion and / or washing of the MSVD coating. The temporary film can be applied using an aqueous wet chemical process after the entire MSVD coating layer is deposited on the substrate and the MSVD coated article exits the MSVD coating chamber (s). The temporary film is removed from the MSVD coated article by contacting the coated surface of the article with water (eg, in a wash typically used in a sheet glass processing process) prior to installing the coated article in an IG unit or other product. Can be removed. In the discussion below, aesthetic data and thermal management performance data related to the present invention have been collected without the presence of a temporary film, because the temporary film has not been applied and / or has already been removed. Because it was either. Further, when discussing the outermost protective film (s), temporary films are excluded for the reasons described above.

  Referring to FIG. 2, there is shown an exemplary double glazing unit 30 having a coated article 10 (inner pane) incorporating features of the present invention spaced from a sheet 32 (outer pane) by a spacer frame 34. ing. The present invention is not limited by the configuration and method of assembling the IG unit. The unit can be one or more of the types disclosed in, for example, but not limited to, US Pat. No. 5,655,282. When the IG unit 30 is mounted in a building wall 36, the sheet 32 is an outer sheet and the coated article is an inner sheet. The surface 40 of the sheet 32 is the outer surface or # 1 surface of the outer sheet. The surface 42 of the sheet 32 is the inner surface of the outer sheet 32, that is, the # 2 surface. The surface 44 of the sheet 12 is the inner surface or # 4 surface of the inner sheet. The opposite surface of the sheet 12 is the outer surface of the inner sheet 12 and has a coating 14 and is the # 3 surface. As can be appreciated, the present invention is not limited to the manner in which it is installed in an opening in either a sash, wall fenestration, or structure. Further, the glass sheet can be mounted in a sash or window frame, for example, as disclosed in PCT / US99 / 15698.

  The coating of the present invention can provide reference IG unit values as follows. “Reference IG Unit Value” or “Reference Value” is a window 4.1 available from Lawrence Berkeley National Laboratory from the measured spectral properties of the coating for “Reference IG Unit”. It is the value calculated using the aperture software for lighting (WINDOW 4.1 fenestration software). The reference IG unit has 6 mm SOLEXIA® glass commercially available from PPG Industries as the outer pane and clear glass commercially available from PPG Industries as the inner pane. , Defined as a double pane unit, separated by an air gap of a distance of 0.5 inches (1.27 cm) and having a coating on the # 3 surface.

  Solexia® glass is a subset of colored glass and has the following properties for a nominal 6 mm monolithic piece: luminous transmittance 75% -80% , Luminous reflectance 7% to 8%, and total solar radiation absorption 46% to 48%. Clear glass typically has a luminous transmittance greater than 85%, a luminous reflectance of 7% to 9%, and a total solar absorptance of 15% to 16%. A clear monolithic piece of glass having a thickness of about 6 mm has the following properties: a luminous transmission of greater than 85%, a luminous reflectance of 7% to 9%, and 15% to 16%. Total solar radiation absorption rate.

Unless otherwise indicated, the Solexia® glass cited in the discussion of the present invention and used in the examples has the following properties for monolithic pieces in the range of 5.5 mm to 6 mm. 76.8% nominal luminous transmittance, 7.5% nominal luminous reflectance, 47.2% nominal solar absorptance, 90.4 L ^* T, −7.40 a ^* T, 1.16 b ^* T transmitted color; and 33.1 L ^* R, -2.70 a ^* R, -0.50 b ^* R reflection color ( reflected color). Unless specified otherwise, the clear glass cited in the discussion of the invention and used in the examples had the following properties for monolithic pieces in the range of 5.5 mm to 6 mm: 88.5% nominal luminous transmittance, 8.5% nominal luminous reflectance, 15.8% nominal solar absorptance, 95.4 L ^* T, -1.80 a ^* T, B ^* T transmission color of 0.12; and L ^* R of 35.0, a ^* R of −0.80, b ^* R reflection of −1.00.

The color values here are measurable by the CIELAB 1976 (L ^* , a ^* , b ^* ) system, D65 light source, 10 ° observer. The quoted solar characteristics correspond to the Lawrence Berkeley National Laboratory window 4.1 wavelength range and integral (trapezoidal) scheme. The shielding coefficient (SC) and solar heat gain rate (SHGC) for the reference IG unit are ASHRAE standard estimated summer conditions (outdoor environment temperature 89 ° F, indoor environment temperature 75 ° F, wind speed 7.50 miles / hour (windward) Directed solar radiation load 248.2 Btu / hour-square foot, sky temperature 89 ° F., sky emissivity 1.00). “LSG” is an abbreviation for “Light-to-Solar Gain” ratio and is equal to the ratio of luminous transmittance (expressed as a decimal) to solar heat gain (SHGC). As will be appreciated by those skilled in the art, TSET is the total solar energy transmitted, TSER1 is the total solar energy reflected from the coated surface, and TSER2 is the total solar energy reflected from the uncoated surface.

In one aspect, the coating 14 can provide a reference IG unit value as follows (ie, a calculated value for the coating in the reference IG unit): 40% -70%, eg, 50% -65. %, For example, 50% -60% reference visible light transmittance. The coating -5-12, for example, -7-11, for example, -8-11, for example, transmission ^a in the range of ^{-9~-10, * (transmitted a} *) (a * T) A reference transmitted color can be provided. This coating is transmitted b ^* in the range of 0-5, such as 1-5, such as 2-5, such as 2.5-5, such as 3-5, such as 4-5 ^. ) (B ^* T). The coverage is greater than 0% and less than 20%, such as 5% to 15%, such as 6% to 11%, such as 8% to 11%, such as 8% to 10%. Can provide exterior visible light reflectance (Rext vis). The coating 14 is -2 to 8, for example, -2 to 7, for example, -3-6, for example, -3-5, reference external reflection ^a in the range of ^* (reference ^reflected exterior a ^*) (Rexta ^* ) can be given. The coating 0-5, for example, 0-4, for example, 0-3, for example, -1 to 3, standard external reflection ^b within the range of ^{* (reference reflected exterior b *)} (Rextb *) Can be given. This coating is in the range of 0.25 to 0.45, for example 0.3 to 0.4, for example 0.35 to 0.37, for example 0.41 or less, for example 0.37 or less, for example 0.36 or less, eg 0.35 or less, eg 0.33 or less, eg 0.32 or less, eg 0.31 or less, reference shading coefficient. This coating is in the range of 0.2 to 0.4, such as 0.3 to 0.4, such as 0.3 to 0.35, such as 0.3 to 0.32, such as 0.36. Hereinafter, for example, a reference solar heat gain coefficient of 0.35 or less, such as 0.33 or less, such as 0.32 or less, such as 0.31 or less, can be provided.

  The following examples illustrate the invention but should not be construed as limiting the invention to their details. Throughout this specification and in the following examples, all parts and percentages are by weight unless otherwise specified.

(Example)
In the examples below, the coating is inline magnetron sputter deposition system model no. No. 1 sold by Airco Temescal on a 6 mm clear glass sheet. Deposited using ILS 1600. The quoted thermal management performance values correspond only to center-of-glass (COG) values; they do not include edge effects due to spacers and frames. Luminous transmittance and luminous external reflectance are measured using a spectrophotometer Lamda 9 and are available from Lawrence Berkeley National Laboratory (LBNL). Sought to use. The emissivity was determined according to ASTM E-1585-93 using an Emissivity Mattson Galaxy 5030 FTIR infrared spectrophotometer with spacing for infrared integration over the 5-40 micron wavelength range. . The CIELAB 1976 (L ^* , a ^* , b ^* ) system, D65 light source, and 10 ° observer are attached to the color data as reference items. The quoted solar characteristics correspond to the Lawrence Berkeley National Laboratory window 4.1 wavelength range and integral (trapezoidal) scheme. R _sheet is the electrical sheet resistance of the coated surface of the sample as measured with a 4-point probe. The IG unit's shielding coefficient (SC) and solar heat gain rate (SHGC) are ASHRAE standard estimated summer conditions (outdoor environment temperature 89 ° F, indoor environment temperature 75 ° F, wind speed 7.50 miles / hour (toward the windward) ), Solar radiation load 248.2 Btu / hour-square foot, sky temperature 89 ° F., sky emissivity 1.00). Unless otherwise specified, the coated glass sheets had a nominal thickness of 6 millimeters (mm). Since the lateral dimensions are independent of the COG characteristics, they are not discussed with respect to the COG characteristics.

  “IG unit performance” data is calculated for the “reference IG unit” from the measured spectral properties of the coating as described above using the Window 4.1 windowing software available from Lawrence Berkeley National Laboratory. It was.

  Sample 1 contained the following layers:

  A first separating layer 22 having an oxide dielectric film of 54% zinc and 46% tin (by weight) deposited on a clear glass substrate. This dielectric film had a physical thickness estimated to be about 341 mm (34.1 nanometers, nm);

  The first infrared reflective layer 16 deposited on the first separating layer has metallic silver (Ag), and the physical thickness of the silver layer was estimated to be about 123 mm (12.3 nm);

  The second separating layer 24 is a metallic titanium (Ti) primer film having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the silver layer of the first infrared reflective layer 16; An oxide dielectric film of 54% zinc and 46% tin alloy (by weight) having a physical thickness estimated to be about 808 mm (80.0 nm) deposited on the primer film. Included;

  The second infrared reflective layer 18 was metallic silver (Ag) having a thickness estimated to be about 172 mm (17.2 nm) deposited on the dielectric film of the second separating layer;

  The outermost separation layer 28 is a metallic titanium (Ti) primer film having a physical thickness of about 15 mm (1.5 nm) deposited on the second infrared reflective layer, and about 244 mm (24.4 nm). An oxide film of an alloy of 54% zinc and 46% tin (by weight) with an estimated physical thickness and estimated to be about 30 mm (3 nm) deposited on the dielectric film. And a protective overcoat film of titanium (Ti) oxide having a specified physical thickness.

The coated monolithic sheet of Sample 1 had the properties detailed in Table 3 among others.

The spectrophotometric data of sample 1 was used as input to the window 4.1 windowing simulation software to determine the calculated reference IG unit performance of Table 4. A display with “T”, for example “a ^* T”, refers to transmission characteristics, and a display with “R” refers to reflection characteristics.

  Sample 2 contained the following layers:

  Having a dielectric film of an alloy of 54% zinc and 46% tin (by weight) with an estimated physical thickness of about 378 mm (37.8 nm) deposited on a clear glass substrate First separating layer 22;

  A first infrared reflective layer 16 having a metallic silver (Ag) film having a physical thickness estimated to be about 93 mm (9.3 nm) deposited on the dielectric film of the first separation layer;

  A primer film of deposited metal titanium (Ti) having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the first infrared reflective layer and deposited on the primer film A second separation layer 24 having an oxide dielectric film of 54% zinc and 46% tin alloy (by weight) having a physical thickness estimated to be about 739 mm (73.9 nm);

  A second infrared reflective layer 18 comprising metallic silver (Ag) having a physical thickness estimated to be about 114 Å (11.4 nm) deposited on the dielectric film of the second separating layer;

  A third separating layer 26 having a primer film deposited as metallic titanium (Ti) having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the second infrared reflective layer 18. Of 54% zinc and 46% tin (by weight) having a physical thickness estimated to be about 729 mm (72.9 nm) deposited on the primer layer of this third separation layer 26 Said third separating layer 26 comprising an alloy oxide dielectric film;

  A third infrared reflective layer having metallic silver (Ag) having a physical thickness estimated to be about 138 cm (13.8 nm) deposited on the dielectric film of the third separation layer; and

  A primer film deposited as metallic titanium (Ti) having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the third infrared reflective layer; Outermost separation layer 28 having 54% zinc and 46% tin alloy oxide dielectric film with a physical thickness estimated to be about 262 mm (26.2 nm) deposited Having a protective film of oxide of titanium (Ti) having a physical thickness estimated to be about 30 mm (3 nm) deposited on the dielectric film of this outermost separation layer 28; The outermost separation layer 28;

Sample 2 had the properties detailed in Tables 5 and 6 below.

  Sample 3 contained the following layers:

  A first separating layer 22 having a dielectric film of an oxide of an alloy of 54% zinc and 46% tin (by weight) deposited on a glass substrate. The dielectric film had a physical thickness estimated to be about 336 mm (33.6 nanometers, nm);

  A first infrared reflective layer 16 that is metallic silver (Ag) deposited on the first separation layer and having a physical thickness of the silver layer estimated to be about 111 mm (11.1 nm);

  A metallic titanium (Ti) primer film having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the silver film of the first infrared reflective layer 16 and on the primer film Second separation layer 24 having an oxide dielectric film of 54% zinc and 46% tin alloy (by weight) having a physical thickness estimated to be about 842 mm (84.2 nm) deposited. ;

  A second infrared reflective layer 18 of metallic silver (Ag) having a thickness estimated to be about 161 Å (16.1 nm) deposited on the dielectric film of the second separation layer;

  A primer film of metallic titanium (Ti) having a physical thickness of about 15 mm (1.5 nm) deposited on the second infrared reflective layer, and a physical estimated to be about 245 mm (24.5 nm) An oxide film of 54% zinc and 46% tin alloy having a thickness (by weight) and a physical thickness estimated to be about 30 mm (3 nm) deposited on the dielectric film. An outermost separation layer 28 including a protective film of titanium (Ti) oxide.

Sample 3 had the properties detailed in Tables 7 and 8.

  Sample 4 contained the following layers:

  A first separating layer 22 having a dielectric film of an oxide of an alloy of 54% zinc and 46% tin (by weight) deposited on a glass substrate. The dielectric film had a physical thickness estimated to be about 293 mm (29.3 nanometers, nm);

  A first infrared reflective layer 16 having metallic silver (Ag) deposited on the first separating layer, wherein the physical thickness of the silver layer is estimated to be about 113 mm (11.3 nm);

  A primer film of deposited metal titanium (Ti) having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the silver film of the first infrared reflective layer 16 and the primer film Second separating layer having 54% zinc (by weight) and an oxide dielectric film of 46% tin alloy having a physical thickness estimated to be about 851 mm (85.1 nm) deposited on the substrate 24;

  A second infrared reflective layer 18 of metallic silver (Ag) having a thickness estimated to be about 197 mm (19.7 nm) deposited on the dielectric film of the second separating layer;

  A metallic titanium (Ti) primer film having a physical thickness of about 15 mm (1.5 nm) deposited on the second infrared reflective layer, and a physical estimated to be about 245 mm (24.5 nm) 54% zinc and 46% tin alloy oxide film having a nominal thickness and a physical thickness estimated to be about 30 mm (3 nm) deposited on the dielectric film An outermost separating layer having a protective overcoat film of an oxide of titanium (Ti) having:

Sample 4 had the properties detailed in Tables 9 and 10.

  Sample 5 contained the following layers:

  A first separation layer 22 having a dielectric film of an oxide of an alloy of 54% zinc and 46% tin (by weight) deposited on a 2.3 mm thick clear glass substrate having a thickness of 2.5 mm. The dielectric film had a physical thickness estimated to be about 319 mm (31.9 nanometers, nm);

  A first infrared reflective layer 16 of metallic silver (Ag) having a physical thickness estimated to be about 114 mm (11.4 nm) deposited on the first separating layer;

  A metallic titanium (Ti) primer film having a physical thickness estimated to be about 15 mm (1.5 nm) deposited on the silver film of the first infrared reflective layer 16 and on the primer film Second separation layer 24 having an oxide dielectric film of 54% zinc and 46% tin alloy (by weight) having a physical thickness estimated to be about 845 mm (84.5 nm) deposited. ;

  A second infrared reflective layer 18 of metallic silver (Ag) having a thickness estimated to be about 170 mm (17.0 nm) deposited on the dielectric film of the second separating layer;

  A metallic titanium (Ti) primer film having a physical thickness of about 15 mm (1.5 nm) deposited on the second infrared reflective layer and a physical estimated to be about 257 mm (25.7 nm). 54% zinc and 46% tin alloy oxide film having a nominal thickness and a physical thickness estimated to be about 30 mm (3 nm) deposited on the dielectric film An outermost separating layer having a protective overcoat film of an oxide of titanium (Ti) having:

Sample 5 had the properties shown in Tables 11 and 12.

  Sample 6 contained the following layers:

  54% zinc with a physical thickness estimated to be about 240 mm (24.0 nanometers, nm) deposited on a glass substrate having a thickness of about 2.3 mm (by weight) and 46 A first dielectric film of oxide of a tin alloy with a physical thickness estimated to be about 80 mm (8.0 nanometers, nm) deposited on the first dielectric film. A first dielectric layer comprising a second dielectric film of 90% zinc (by weight) and an oxide of an alloy of 10% tin to provide a dielectric film having a combined thickness of 320 mm (32.0 nm) 22;

  A first infrared reflective layer 16 having a metallic silver (Ag) film having a physical thickness estimated to be about 114 mm (11.4 nm) deposited on the first separation layer;

  A second separating layer 24 having a primer film of metallic titanium (Ti) having a physical thickness estimated to be about 25 mm (2.5 nm) deposited on the silver film of the first infrared reflective layer 16. 90% zinc (by weight) with a physical thickness estimated to be about 84 cm (8.4 nanometers, nm) deposited on the primer film of this second separation layer; A first dielectric film of 10% tin alloy oxide and a physical thickness estimated to be about 676 mm (67.6 nanometers, nm) deposited on the first dielectric layer. A second dielectric film of 54% zinc and 46% tin oxide oxide (by weight) with about 84 cm (8.4 nanometers, nm) deposited on the second dielectric layer; 90% zinc (by weight) with a physical thickness estimated to be Providing a triple dielectric film having a physical thickness estimated to be about 844 mm (84.4 nm) combined with a third dielectric film of an oxide of a 0% tin alloy A second separating layer 24;

  A second infrared reflective layer 18 of metallic silver (Ag) having a thickness estimated to be about 170 mm (17.0 nm) deposited on the third dielectric film of the second separating layer;

  An outermost separation layer having a titanium (Ti) primer film having a physical thickness of about 25 mm (2.5 nm) deposited on the second infrared reflective layer, the outermost separation layer 90% zinc and 10% tin alloy oxide with a physical thickness estimated to be about 85 mm (8.5 nanometers, nm) deposited on 28 primer films First dielectric film, 54% zinc (by weight) with a physical thickness estimated to be about 172 mm (17.2 nanometers, nm) deposited on the first dielectric film And a second dielectric film of an oxide of a 46% tin alloy, the first and second dielectric films together having a physical thickness estimated to be about 257 mm (25.7 nm), and About 30 deposited on the dielectric film. Having a protective overcoat film of an oxide of titanium (Ti) having a physical thickness estimated to be (3 nm), the outermost separation layer 28.

A monolithic coated glass piece of Sample 6 having a lateral dimension of about 4 inches × 4 inches and a nominal thickness of 2.3 millimeters is heated in a box oven (oven temperature setting 1300 ° F.) for about 3 minutes. After being removed from the oven and then allowed to cool to ambient temperature in ambient air, it had the properties detailed in Tables 13 and 14. The lateral dimensions of sample 6 were presented because they were interested in the dimensions because they were heat treated.
Sample 6 had the properties shown in Tables 13 and 14.

  Sample 7 contained the following layers:

  54% zinc with a physical thickness estimated to be about 302 mm (30.2 nanometers, nm) deposited on a 4 x 4 inch about 2.3 mm glass substrate and 46 % Tin alloy oxide first dielectric film with a physical thickness estimated to be about 75 mm (7.5 nanometers, nm) deposited on the first dielectric layer. A dielectric having a physical thickness estimated to be 377 mm (37.7 nm) with a second dielectric film of an oxide of an alloy of 90% zinc and 10% tin (by weight) A first separating layer 22 to provide a body film;

  A first infrared reflective layer 16 having metallic silver (Ag) deposited on the first separation layer, wherein the physical thickness of the silver layer is estimated to be about 93 mm (9.3 nm);

  With a second separation layer 24 having a primer film of metallic titanium (Ti) having a physical thickness estimated to be about 25 mm (2.5 nm) deposited on the silver film of the first infrared reflective layer. 90% zinc and 10% (by weight) with a physical thickness estimated to be about 74 mm (7.4 nanometers, nm) deposited on the primer film of this second separation layer. % Tin alloy oxide first dielectric film and a physical thickness estimated to be about 591 mm (59.1 nanometers, nm) deposited on the first dielectric film. A second dielectric film of an oxide of an alloy of 54% zinc and 46% tin (by weight) and about 74 mm (7.4 nanometers, nm) deposited on the second dielectric layer. 90% zinc (by weight) with estimated physical thickness A triple dielectric film having a physical thickness estimated to be about 739 mm (73.9 nm) in combination with a third dielectric film of an oxide of 10% tin alloy A second separating layer 24;

  A second infrared reflective layer 18 of metallic silver (Ag) having a thickness estimated to be about 114 Å (11.4 nm) deposited on the third dielectric film of the second separating layer;

  A third separating layer 26 having a primer film of titanium metal (Ti) having a physical thickness estimated to be about 25 mm (2.5 nm) deposited on the silver film of the second infrared reflective layer 18. 90% zinc (by weight) with a physical thickness estimated to be about 73 mm (7.3 nanometers, nm) deposited on the primer film of this second separation layer; A first dielectric film of 10% tin alloy oxide and a physical thickness estimated to be about 583 mm (58.3 nanometers, nm) deposited on the first dielectric film. A second dielectric film of an oxide of 54% zinc and 46% tin (by weight) with about 73 cm (7.3 nanometers, nm) deposited on the second dielectric layer; 90% (by weight) with estimated physical thickness Having a third dielectric film of lead and a 10% tin alloy oxide provides a triple dielectric film having a combined physical thickness of about 729 mm (72.9 nm) The third separating layer 26;

  A third infrared reflective layer 20 comprising metallic silver (Ag) having a thickness estimated to be about 138 cm (13.8 nm) deposited on the third dielectric film of the third separating layer 26;

  An outermost separation layer having a titanium (Ti) primer film having a physical thickness of about 25 mm (2.5 nm) deposited on a third infrared reflective layer, the outermost separation layer Of an alloy of 90% zinc and 10% tin alloy (by weight) with a physical thickness estimated to be about 87 mm (8.7 nanometers, nm) deposited on a primer film of A first dielectric film, 54% zinc (by weight) having a physical thickness estimated to be about 175 mm (17.5 nanometers, nm) deposited on the first dielectric film; A second dielectric film of 46% tin alloy oxide, the first and second dielectric films together having a physical thickness estimated to be about 262 mm (26.2 nm); and About 30 mm (on the top of this dielectric film) Having a protective overcoat film of an oxide of titanium (Ti) having to be nm) a physical thickness estimated, the outermost separation layer 28.

Sample 7 was heated in a box oven (oven temperature setting 1300 ° F.) for about 3 minutes, then removed from the oven and allowed to cool to ambient temperature in ambient air before the samples 7 and 16 were detailed. Had properties:

  Sample 8 contained the following layers:

  54% zinc and 46% tin (by weight) with a physical thickness estimated to be about 257 mm (25.7 nanometers, nm) deposited on a glass substrate having a thickness of about 6 mm A first dielectric film of oxide of the alloy and a physical thickness estimated to be about 64 mm (6.4 nanometers, nm) deposited on the first dielectric layer ( Having a second dielectric film (by weight) of 90% zinc and 10% tin alloy oxide to provide a dielectric film having a combined physical thickness of 321 mm (32.1 nm). A separate layer 22;

  A first infrared reflective layer 16 having metallic silver (Ag) deposited on the first separation layer, wherein the physical thickness of the silver layer is estimated to be about 119 mm (11.9 nm);

  A second separating layer 24 having a primer film of titanium metal (Ti) having a physical thickness estimated to be about 20 mm (2.0 nm) deposited on the silver film of the first infrared reflective layer 16. 90% zinc (by weight) with a physical thickness estimated to be about 92 mm (9.2 nanometers, nm) deposited on the primer film of this second separation layer; A 10% tin alloy oxide first dielectric film and a physical thickness estimated to be about 632 cm (63.2 nanometers, nm) deposited on the first dielectric film. A second dielectric film of an oxide of 54% zinc and 46% tin (by weight) with about 108 cm (10.8 nanometers, nm) deposited on the second dielectric layer; 9 (by weight) with estimated physical thickness A triple dielectric film having a physical thickness estimated to be about 832 mm (83.2 nm), with a third dielectric film of oxide of 10% zinc and 10% tin alloy. Providing said second separating layer 24;

  A second infrared reflective layer 18 having a metallic silver (Ag) film having a thickness estimated to be about 176 mm (17.6 nm) deposited on the third dielectric film of the second separating layer;

  An outermost separation layer having a primer film of metallic titanium (Ti) having a physical thickness of about 20 mm (2.0 nm) deposited on the second infrared reflective layer, the outermost separation layer 90% zinc and 10% tin alloy oxide with a physical thickness estimated to be about 72 mm (7.2 nanometers, nm) deposited on 28 primer films First dielectric film, 54% zinc (by weight) with a physical thickness estimated to be about 134 cm (13.4 nanometers, nm) deposited on the first dielectric film And a second dielectric film of an oxide of a 46% tin alloy, the first and second dielectric films having a physical thickness estimated to be about 206 mm (20.6 nm), and About 44 deposited on the dielectric film. Having a protective overcoat film of an oxide of titanium (Ti) having estimated physical thickness to be (4.4 nm), the outermost separation layer 28.

Sample 8 had the properties of Tables 17 and 18:

  Sample 9 contained the following layers:

  54% zinc and 46% tin (by weight) with a physical thickness estimated to be about 286 mm (28.6 nanometers, nm) deposited on a glass substrate having a thickness of about 6 mm A first dielectric film of an oxide of the alloy and a physical thickness estimated to be about 67 mm (6.7 nanometers, nm) deposited on the first dielectric layer ( Having a second dielectric film (by weight) of 90% zinc and 10% tin alloy oxide to provide a dielectric film having a combined physical thickness of 353 mm (35.3 nm). A separate layer 22;

  A first infrared reflective layer 16 having metallic silver (Ag) deposited on the first separating layer, wherein the physical thickness of the silver layer is estimated to be about 10 9 (10.9 nm);

  A second separating layer 24 having a primer film of titanium metal (Ti) having a physical thickness estimated to be about 20 mm (2.0 nm) deposited on the silver film of the first infrared reflective layer 16. 90% zinc (by weight) having a physical thickness estimated to be about 94 mm (9.4 nanometers, nm) deposited on the primer film of this second separation layer; A first dielectric film of 10% tin alloy oxide and a physical thickness estimated to be about 648 mm (64.8 nanometers, nm) deposited on the first dielectric film. A second dielectric film of an oxide of 54% zinc and 46% tin alloy (by weight) with about 111 cm (1.11 nanometers, nm) deposited on the second dielectric layer; 9 (by weight) with estimated physical thickness A triple dielectric film having a physical thickness estimated to be about 852 mm (85.2 nm), comprising a third dielectric film of oxide of 10% zinc and 10% tin alloy. Providing said second separating layer 24;

  A second infrared reflective layer 18 having metallic silver (Ag) having a thickness estimated to be about 182 mm (18.2 nm) deposited on the third dielectric film of the second separating layer;

  An outermost separation layer 28 comprising a metallic titanium (Ti) primer film having a physical thickness of about 20 mm (2.0 nm) deposited on a second infrared reflective layer, the outermost separation layer 90% zinc and 10% tin alloy oxide having a physical thickness estimated to be about 75 mm (7.5 nanometers, nm) deposited on the layer primer film First dielectric film, 54% zinc (by weight) having a physical thickness estimated to be about 139 mm (13.9 nanometers, nm) deposited on the first dielectric film And a second dielectric film of an oxide of 46% tin alloy, the first and second dielectric films together having a physical thickness estimated to be about 214 mm (21.4 nm), and About 44 mm deposited on the dielectric film Was included protective overcoat film of an oxide of titanium (Ti) having estimated physical thickness to be 4.4 nm), the outermost separation layer 28.

Sample 9 had the properties detailed in Tables 19 and 20.

  Sample 10 contained the following layers:

  54% zinc and 46% tin with a physical thickness estimated to be about 390 mm (39.0 nanometers, nm) deposited on a glass substrate having a thickness of about 6 mm A first dielectric film of an oxide of the alloy and a physical thickness estimated to be about 104 mm (10.4 nanometers, nm) deposited on the first dielectric layer ( A dielectric having a physical thickness estimated to be 494 mm (49.4 nm), with a second dielectric film of 90% zinc and 10% tin alloy oxide (by weight) A first separating layer 22 providing a film;

  A first infrared reflective layer 16 having metallic silver (Ag) deposited on the first separating layer, wherein the physical thickness of the silver layer is estimated to be about 106 mm (10.6 nm);

  A second separating layer 24 having a primer film of titanium metal (Ti) having a physical thickness estimated to be about 20 mm (2.0 nm) deposited on the silver film of the first infrared reflective layer 16. 90% zinc (by weight) having a physical thickness estimated to be about 97 mm (9.7 nanometers, nm) deposited on the primer film of this second separation layer; A first dielectric film of 10% tin alloy oxide and a physical thickness estimated to be about 551 mm (55.1 nanometers, nm) deposited on the first dielectric film. A second dielectric film of an oxide of 54% zinc and 46% tin (by weight) with about 97 mm (9.7 nanometers, nm) deposited on the second dielectric layer; 90% (by weight) with estimated physical thickness Having a third dielectric film of lead and a 10% tin alloy oxide provides a triple dielectric film having a combined physical thickness of about 744 mm (74.4 nm) The second separating layer 24;

  A second infrared reflective layer 18 having metallic silver (Ag) having a thickness estimated to be about 124 cm (12.4 nm) deposited on the third dielectric film of the second separating layer;

  A third separation layer 24 having a primer film of titanium metal (Ti) having a physical thickness estimated to be about 20 mm (2.0 nm) deposited on the silver film of the first infrared reflective layer 18. 90% zinc (by weight) having a physical thickness estimated to be about 99 mm (9.9 nanometers, nm) deposited on the primer film of this second separation layer; A first dielectric film of 10% tin alloy oxide and a physical thickness estimated to be about 565 mm (56.5 nanometers, nm) deposited on the first dielectric film. A second dielectric film of an alloy of 54% zinc and 46% tin (by weight) with about 99 mm (9.9 nanometers, nm) deposited on the second dielectric layer; 90% (by weight) with estimated physical thickness Having a third dielectric film of lead and a 10% tin alloy oxide provides a triple dielectric film having a combined physical thickness of about 764 mm (76.4 nm) The third separation layer;

  A third infrared reflective layer 20 of metallic silver (Ag) having a thickness estimated to be about 181 mm (18.1 nm) deposited on the third dielectric film of the third separation layer;

  An outermost separation layer 28 comprising a metallic titanium (Ti) primer film having a physical thickness of about 20 mm (2.0 nm) deposited on a second infrared reflective layer, the outermost separation layer 90% zinc and 10% tin alloy oxide with a physical thickness estimated to be about 93 mm (9.3 nanometers, nm) deposited on the primer film of the layer First dielectric film, 54% zinc (by weight) with a physical thickness estimated to be about 217 mm (21.7 nanometers, nm) deposited on the first dielectric film And a second dielectric film of an oxide of a 46% tin alloy, the first and second dielectric films together having a physical thickness estimated to be about 310 mm (31.0 nm), and Approximately 46 cm deposited on the dielectric film Was included protective overcoat film of an oxide of titanium (Ti) having estimated physical thickness to be 4.6 nm), the outermost separation layer 28.

Sample 10 had the properties detailed in Tables 21 and 22.

Samples 11-13 had the layer structure shown in Table 23 below and were deposited on a 6 mm clear glass sheet.

Samples 11-13 gave the spectral characteristics shown in Table 24 for the coated sheets. The reference IG unit performance calculated for samples 11-13 is shown in Table 25.

  As can be appreciated, other aesthetic and solar performance can also be achieved using the above general coating stack design. For example, IG units can be manufactured using the coatings of the present invention with various types of glass. For example, but not limiting the present invention, a glass that limits ultraviolet energy transmission, similar to the type sold under the trademark Solargreen by PPG Industries, Inc .; blue glass, eg, PPG Industries, Inc. The type sold under the trademark Azurlite by the company; glass with low transmission, for example the type sold under the trademark Solarbronze by the company PPG Industries; and Pilkington-Lof -Types sold under the trademark BlueGreen by LOF).

  As can be appreciated, the above discussion and examples are only meant to illustrate embodiments of the invention, and the invention is not limited thereto.

1 is a side cross-sectional view (not proportional) of a coated article incorporating features of the present invention. It is a sectional side view (not proportional) of the IG unit incorporating the features of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Coated article 12 Base | substrate 14 Coating | coated 16 1st infrared reflective layer 18 2nd infrared reflective layer 20 3rd infrared reflective layer 22 1st separated layer 24 2nd separated layer 26 3rd separated layer 28 Outermost separated layer 30 2 Heavy glass-clad IG unit 10 Coated article of the present invention (IG sheet inner sheet 12)
14 Coating of the coated article of the present invention (outer surface of inner sheet 12 (# 3 surface))
44 Inner surface of inner sheet 12 (# 4 surface)
32 Outer sheet of IG unit 40 Outer surface of outer sheet 32 (# 1 surface)
42 Inner surface of outer sheet 32 (# 2 surface)
34 Spacer frame 36 Building wall

Claims (22)

Outer pane;
At least one inner pane; and a coating formed on at least a portion of the outer surface of the inner pane;
This coating is
A first separating layer comprising at least one dielectric layer;
A first infrared reflective layer deposited on the first separation layer;
A second separating layer comprising at least one dielectric layer deposited on the first infrared reflective layer;
A second infrared reflective layer deposited on the second separating layer;
A third separation layer comprising at least one dielectric layer deposited on the second infrared reflection layer; and a third infrared reflection layer deposited on the third separation layer;
The first separation layer includes a zinc oxide layer deposited on the zinc stannate layer;
A heat insulating glass unit having a reference solar heat gain of less than 0.36 . The heat insulating glass unit according to claim 1, wherein the zinc oxide layer has a thickness in the range of 100 to 200 mm. The heat insulating glass unit according to claim 1 or 2, wherein the zinc stannate layer has a thickness in a range of 250 to 400 mm. Outer pane;
At least one inner pane; and a coating formed on at least a portion of the outer surface of the inner pane;
This coating is
A first separating layer comprising at least one dielectric layer;
A first infrared reflective layer deposited on the first separation layer;
A second separating layer comprising at least one dielectric layer deposited on the first infrared reflective layer;
A second infrared reflective layer deposited on the second separating layer;
A third separation layer comprising at least one dielectric layer deposited on the second infrared reflection layer; and a third infrared reflection layer deposited on the third separation layer;
The second separation layer includes a first zinc oxide layer, a zinc stannate layer deposited on the first zinc oxide layer, and a zinc dioxide layer deposited on the zinc stannate layer;
A heat insulating glass unit having a reference solar heat gain of less than 0.36 . The first zinc oxide layer has a thickness in the range of 100 to 150 inches, the zinc stannate layer has a thickness in the range of 200 to 500 inches, and the zinc dioxide layer is in the range of 100 to 150 inches. The heat insulating glass unit according to claim 4 , which has a thickness. Outer pane;
At least one inner pane; and a coating formed on at least a portion of the outer surface of the inner pane;
This coating is
A first separating layer comprising at least one dielectric layer;
A first infrared reflective layer deposited on the first separation layer;
A second separating layer comprising at least one dielectric layer deposited on the first infrared reflective layer;
A second infrared reflective layer deposited on the second separating layer;
A third separation layer comprising at least one dielectric layer deposited on the second infrared reflection layer; and a third infrared reflection layer deposited on the third separation layer;
The third separation layer includes a first zinc oxide layer, a zinc stannate layer deposited on the first zinc oxide layer, and a zinc dioxide layer deposited on the zinc stannate layer;
A heat insulating glass unit having a reference solar heat gain of less than 0.36 . The heat insulating glass unit according to claim 6 , wherein each of the zinc oxide layers has a thickness within a range of 100 to 150 inches. The heat insulating glass unit according to claim 6 or 7, wherein the zinc stannate layer has a thickness in a range of 450 to 550 mm. The heat insulating glass according to any one of claims 1 to 8, wherein the infrared reflective layer contains at least one metal selected from the group consisting of gold, copper, silver, or a mixture, alloy or combination thereof. Unit . The heat insulating glass unit according to any one of claims 1 to 9, wherein the first infrared reflective layer has a thickness within a range of 100 to 150 inches. The heat insulating glass unit according to any one of claims 1 to 10, wherein the second infrared reflective layer has a thickness in the range of 100 to 150 inches. The heat insulating glass unit according to any one of claims 1 to 11, wherein the third infrared reflective layer has a thickness within a range of 140 to 180 inches. The heat insulating glass unit according to any one of claims 1 to 12 , including a fourth separation layer including at least one dielectric layer deposited on the third infrared reflective layer. The thermal insulating glass unit of claim 13, wherein the fourth separation layer comprises a zinc stannate layer deposited on the zinc oxide layer. The insulating glass unit of claim 14 , wherein the zinc stannate layer has a thickness in the range of 150 to 250 inches. The heat insulating glass unit according to claim 14 or 15, wherein the zinc oxide layer has a thickness in the range of 80 to 120 mm. 17. Insulating glass unit according to any one of claims 13-16 , comprising a protective overcoat deposited on the fourth separation layer and comprising titania having a thickness in the range of 20-50cm. The heat insulating glass unit according to any one of claims 1 to 17 , which has a reference visible light transmittance within a range of 50% to 60%. 19. A reference transmission a ^* (a ^* T) in the range of -5 to -12 and a reference transmission b ^* (b ^* T) in the range of 0-5. heat-insulating glass units. The heat insulating glass unit according to any one of claims 1 to 19, having a reference visible light external reflectance (Rext vis) within a range of 5% to 15%. 21. The insulating glass unit according to claim 20, having a reference external reflection a ^* (Rexta ^* ) in the range of −2 to −10 and a reference external reflection b ^* (Rextb ^* ) in the range of −0 to −5 ^. . The heat insulating glass unit according to any one of claims 1 to 21, having a reference shielding coefficient of less than 0.41.

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